Ol Kalou climate — normals and trends

Q: What is the climate of Ol Kalou?

Ol Kalou has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 13.2 °C and it receives 1,841 mm of precipitation per year.

Q: What is the hottest day ever recorded in Ol Kalou?

The hottest day measured in Ol Kalou between 1940 and 2025 was 8 April 2019, reaching 26.5 °C.

Q: What is the coldest day in Ol Kalou?

The coldest day measured in Ol Kalou between 1940 and 2025 was 2 January 2012, at 1.2 °C.

Q: Does it snow in Ol Kalou?

Almost never: Ol Kalou sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Ol Kalou warmed?

Yes: Ol Kalou warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ol Kalou?

The wettest day measured in Ol Kalou between 1940 and 2025 was 27 March 1970, with 111 mm of rain in 24 hours.

Q: What was the windiest day in Ol Kalou?

The windiest day measured in Ol Kalou between 1940 and 2025 was 30 March 1944, with winds reaching 24.4 km/h.

Q: What is the warmest month in Ol Kalou?

The warmest month in Ol Kalou is March (14.4 °C on average); the coldest is July (12.0 °C).

Q: How much does it rain in Ol Kalou?

Ol Kalou receives on average 1,841 mm of precipitation per year, spread over about 221 rainy days.

Q: Is it sunny in Ol Kalou?

Ol Kalou gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.

Ol Kalou (Kenya) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 13.2 °C and it receives 1,841 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is March (14.4 °C on average) and the coldest is July (12.0 °C). Rainfall peaks in April.

Ol Kalou averages 0 frost days, 0 hot days (≥ 30 °C) and 221 rainy days per year.

Ol Kalou has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.

The hottest day of the period reached 26.5 °C (on 8 April 2019) and the coldest 1.2 °C (on 2 January 2012).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

Ol KalouNyandarua County

coords: -0.27°, 36.38°
period: 1940–2025 · 86 yrs

CfbTemperate oceanicWarmest monthMarchColdest monthJulyWettest monthAprilDriest monthJanuary

Mean daily temperature

13.2°C

Average daily high

18.9°C

Average daily low

8.6°C

Annual rainfall

1,841mm

Sunshine / day

10.4h

Mean relative humidity

76%

Average peak wind

10.6km/h

Seasonal range

2.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

0 d/yr

Rainy days (≥ 1 mm)

221 d/yr

Annual snowfall

0.0 cm

Average feels-like high

18.9 °C

Average feels-like low

7.3 °C

Average peak gust

32.0 km/h

Tropical nights (≥ 20 °C)

0 d/yr

Solar radiation

20.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.9 °C

since 1940

+0.2 °C per decade · r² = 0.83 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

26.5 °C

8 April 2019

Coldest day

1.2 °C

2 January 2012

Wettest day

111 mm

27 March 1970

Windiest day

24.4 km/h

30 March 1944

Strongest gust

72.7 km/h

2 November 1997

Hottest feels-like

25.8 °C

27 March 1992

Coldest feels-like

-2.7 °C

2 January 2012

Sunniest day

12.0 h

17 December 2007

Year	Hottest day	Coldest day	Annual mean	Rainfall
2025	25.2 °C7 March 2025	5.2 °C24 November 2025	14.0 °C	1,883 mm
2024	25.7 °C22 March 2024	5.9 °C24 January 2024	14.4 °C	2,306 mm
2023	25.2 °C1 March 2023	3.5 °C3 February 2023	14.3 °C	1,444 mm
2022	25.1 °C8 March 2022	5.2 °C28 September 2022	14.0 °C	1,183 mm
2021	23.7 °C7 March 2021	5.1 °C1 February 2021	14.1 °C	1,327 mm
2020	24.4 °C15 March 2020	5.6 °C31 August 2020	14.1 °C	2,079 mm
2019	26.5 °C8 April 2019	5.8 °C13 February 2019	14.5 °C	2,176 mm
2018	24.5 °C25 February 2018	5.3 °C16 November 2018	13.8 °C	2,090 mm
2017	25.8 °C20 March 2017	5.9 °C22 December 2017	14.2 °C	1,561 mm
2016	26.4 °C29 March 2016	6.0 °C23 February 2016	14.1 °C	1,776 mm
2015	24.5 °C13 February 2015	4.2 °C15 March 2015	14.2 °C	1,748 mm
2014	23.9 °C1 February 2014	4.9 °C3 March 2014	13.7 °C	1,594 mm
2013	25.6 °C7 March 2013	5.0 °C5 July 2013	13.6 °C	2,221 mm
2012	24.3 °C17 March 2012	1.2 °C2 January 2012	13.5 °C	2,434 mm
2011	25.2 °C11 February 2011	4.7 °C22 February 2011	13.8 °C	2,006 mm
2010	24.5 °C3 February 2010	4.4 °C16 January 2010	13.8 °C	2,122 mm
2009	25.3 °C12 March 2009	4.8 °C14 February 2009	14.1 °C	1,084 mm
2008	25.2 °C13 March 2008	5.1 °C22 December 2008	13.5 °C	1,467 mm
2007	24.8 °C15 March 2007	4.3 °C18 December 2007	13.6 °C	1,760 mm
2006	25.3 °C18 February 2006	5.3 °C4 September 2006	13.9 °C	2,034 mm
2005	24.9 °C3 April 2005	4.7 °C12 February 2005	13.8 °C	1,269 mm
2004	24.1 °C5 March 2004	5.2 °C3 July 2004	13.6 °C	1,700 mm
2003	25.5 °C13 March 2003	4.5 °C22 February 2003	13.7 °C	1,465 mm
2002	24.4 °C2 March 2002	5.2 °C7 July 2002	13.8 °C	1,788 mm
2001	23.2 °C3 March 2001	4.7 °C17 October 2001	13.4 °C	2,002 mm
2000	25.3 °C24 March 2000	4.6 °C6 February 2000	13.6 °C	895 mm
1999	23.8 °C5 March 1999	5.0 °C4 February 1999	13.3 °C	1,260 mm
1998	23.8 °C2 April 1998	5.9 °C10 December 1998	13.8 °C	1,990 mm
1997	25.3 °C7 March 1997	6.0 °C5 February 1997	13.9 °C	2,515 mm
1996	24.6 °C22 February 1996	4.0 °C10 August 1996	13.7 °C	1,697 mm
1995	23.6 °C7 February 1995	3.8 °C20 January 1995	13.7 °C	1,608 mm
1994	24.5 °C10 March 1994	4.9 °C31 December 1994	13.5 °C	1,966 mm
1993	23.9 °C10 April 1993	5.0 °C21 February 1993	13.1 °C	1,593 mm
1992	25.2 °C29 March 1992	5.5 °C11 March 1992	13.3 °C	1,731 mm
1991	25.1 °C22 March 1991	4.7 °C8 March 1991	13.4 °C	1,964 mm
1990	23.3 °C29 January 1990	4.3 °C10 January 1990	13.3 °C	2,208 mm
1989	23.6 °C16 March 1989	4.6 °C22 October 1989	13.1 °C	1,945 mm
1988	24.3 °C2 March 1988	3.7 °C19 October 1988	13.4 °C	2,243 mm
1987	25.0 °C4 March 1987	4.0 °C13 July 1987	14.0 °C	1,486 mm
1986	25.0 °C14 March 1986	3.2 °C5 August 1986	13.3 °C	1,828 mm
1985	23.2 °C15 March 1985	3.7 °C6 August 1985	13.2 °C	1,842 mm
1984	25.4 °C12 March 1984	4.3 °C20 January 1984	13.2 °C	1,266 mm
1983	24.9 °C25 March 1983	5.0 °C17 December 1983	13.6 °C	1,910 mm
1982	25.2 °C23 March 1982	4.1 °C20 February 1982	13.4 °C	1,806 mm
1981	25.1 °C24 February 1981	4.3 °C4 February 1981	13.4 °C	2,030 mm
1980	24.9 °C1 March 1980	3.7 °C8 February 1980	13.5 °C	1,545 mm
1979	23.3 °C9 March 1979	3.8 °C23 August 1979	13.2 °C	1,904 mm
1978	22.3 °C8 February 1978	3.0 °C4 February 1978	12.8 °C	2,093 mm
1977	22.6 °C20 February 1977	3.0 °C30 September 1977	12.9 °C	2,395 mm
1976	24.8 °C17 March 1976	2.8 °C19 August 1976	12.9 °C	1,651 mm
1975	24.4 °C28 March 1975	4.3 °C31 October 1975	12.8 °C	1,775 mm
1974	23.5 °C27 February 1974	4.8 °C24 September 1974	12.9 °C	1,663 mm
1973	25.0 °C17 March 1973	3.9 °C11 December 1973	13.2 °C	1,780 mm
1972	23.7 °C13 March 1972	4.1 °C17 March 1972	13.2 °C	1,824 mm
1971	24.4 °C8 March 1971	3.7 °C16 October 1971	12.6 °C	2,014 mm
1970	23.6 °C18 February 1970	3.5 °C5 March 1970	12.8 °C	1,854 mm
1969	23.0 °C19 March 1969	3.0 °C26 August 1969	12.8 °C	1,314 mm
1968	23.9 °C27 January 1968	3.0 °C14 January 1968	12.6 °C	2,077 mm
1967	25.0 °C25 March 1967	4.3 °C15 January 1967	12.9 °C	2,130 mm
1966	23.5 °C3 February 1966	3.7 °C19 December 1966	13.3 °C	1,824 mm
1965	23.8 °C22 March 1965	3.3 °C18 January 1965	12.9 °C	1,694 mm
1964	23.1 °C12 March 1964	3.4 °C11 December 1964	12.6 °C	1,955 mm
1963	22.2 °C24 March 1963	2.2 °C28 August 1963	12.6 °C	2,665 mm
1962	22.4 °C27 February 1962	3.6 °C5 February 1962	12.5 °C	1,930 mm
1961	24.1 °C22 February 1961	3.1 °C5 January 1961	13.3 °C	1,820 mm
1960	23.1 °C13 March 1960	3.9 °C14 July 1960	13.1 °C	1,732 mm
1959	24.1 °C17 March 1959	3.5 °C20 September 1959	13.2 °C	1,864 mm
1958	23.3 °C13 March 1958	3.2 °C8 November 1958	12.9 °C	1,922 mm
1957	22.2 °C17 February 1957	2.8 °C24 September 1957	12.8 °C	1,881 mm
1956	21.9 °C2 March 1956	4.1 °C9 February 1956	12.1 °C	2,161 mm
1955	22.1 °C10 March 1955	3.9 °C18 November 1955	12.3 °C	1,921 mm
1954	21.4 °C15 March 1954	3.9 °C7 October 1954	12.2 °C	2,203 mm
1953	20.3 °C1 October 1953	4.0 °C11 January 1953	12.5 °C	2,512 mm
1952	21.4 °C24 March 1952	4.9 °C2 September 1952	12.4 °C	2,307 mm
1951	22.2 °C27 February 1951	4.4 °C3 July 1951	12.5 °C	2,786 mm
1950	22.0 °C3 March 1950	4.5 °C9 September 1950	12.2 °C	2,418 mm
1949	22.3 °C11 March 1949	4.5 °C17 October 1949	12.4 °C	2,229 mm
1948	21.0 °C17 April 1948	5.0 °C19 September 1948	12.5 °C	1,902 mm
1947	20.6 °C2 February 1947	4.5 °C5 August 1947	12.4 °C	2,512 mm
1946	24.2 °C25 February 1946	2.9 °C22 September 1946	12.8 °C	1,351 mm
1945	22.3 °C4 February 1945	4.6 °C1 October 1945	12.4 °C	1,153 mm
1944	23.7 °C5 March 1944	3.7 °C29 December 1944	12.7 °C	1,086 mm
1943	23.8 °C1 March 1943	3.9 °C21 March 1943	12.4 °C	1,212 mm
1942	22.2 °C9 February 1942	1.5 °C29 January 1942	12.4 °C	1,120 mm
1941	22.8 °C9 February 1941	3.4 °C27 June 1941	12.6 °C	1,456 mm
1940	20.6 °C22 February 1940	4.1 °C6 October 1940	12.2 °C	2,350 mm

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

19.7 °C

+0.8 °C

Hot days (≥ 30 °C)

0 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1883 mm

+42 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	20.8 °C	+0.9 °C	94 mm	+34 mm
Feb	22.6 °C	+1.6 °C	4 mm	-58 mm
Mar	21.6 °C	+0.5 °C	163 mm	+38 mm
Apr	20.4 °C	+0.7 °C	202 mm	-57 mm
May	20.0 °C	+1.1 °C	141 mm	-68 mm
Jun	19.2 °C	+1.1 °C	91 mm	-44 mm
Jul	18.1 °C	+1.2 °C	163 mm	-17 mm
Aug	17.3 °C	+0.2 °C	275 mm	+68 mm
Sep	19.0 °C	+0.6 °C	259 mm	+114 mm
Oct	18.5 °C	-0.3 °C	258 mm	+90 mm
Nov	19.4 °C	+1.2 °C	152 mm	-37 mm
Dec	19.8 °C	+1.1 °C	80 mm	-20 mm

The year's extremes

Hottest day

25.2 °C

7 Mar 2025

Coldest day

5.2 °C

24 Nov 2025

Wettest day

52.3 mm

9 Nov 2025

Windiest day

20.6 km/h

22 Feb 2025

Strongest gust

55.4 km/h

22 Feb 2025

Hottest feels-like

24.6 °C

5 Mar 2025

Coldest feels-like

3.1 °C

24 Nov 2025

Sunniest day

11.8 h

21 Feb 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Ol Kalou?

Ol Kalou has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 13.2 °C and it receives 1,841 mm of precipitation per year.

What is the hottest day ever recorded in Ol Kalou?

The hottest day measured in Ol Kalou between 1940 and 2025 was 8 April 2019, reaching 26.5 °C.

What is the coldest day in Ol Kalou?

The coldest day measured in Ol Kalou between 1940 and 2025 was 2 January 2012, at 1.2 °C.

Does it snow in Ol Kalou?

Almost never: Ol Kalou sees virtually no snow, with about 0 frost days per year.

Has the climate of Ol Kalou warmed?

Yes: Ol Kalou warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ol Kalou?

The wettest day measured in Ol Kalou between 1940 and 2025 was 27 March 1970, with 111 mm of rain in 24 hours.

What was the windiest day in Ol Kalou?

The windiest day measured in Ol Kalou between 1940 and 2025 was 30 March 1944, with winds reaching 24.4 km/h.

What is the warmest month in Ol Kalou?

The warmest month in Ol Kalou is March (14.4 °C on average); the coldest is July (12.0 °C).

How much does it rain in Ol Kalou?

Ol Kalou receives on average 1,841 mm of precipitation per year, spread over about 221 rainy days.

Is it sunny in Ol Kalou?

Ol Kalou gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.

Are there tropical nights in Ol Kalou?

Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Ol Kalou.

What was the most extreme apparent temperature in Ol Kalou?

In Ol Kalou, between 1940 and 2025, the highest apparent temperature reached 25.8 °C on 27 March 1992, and the lowest was -2.7 °C on 2 January 2012.

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